Priorities among Multiple Queues for Processor Co-Allocation in Multicluster Systems

  • Authors:
  • A. I. D. Bucur;D. H. J. Epema

  • Affiliations:
  • -;-

  • Venue:
  • ANSS '03 Proceedings of the 36th annual symposium on Simulation
  • Year:
  • 2003

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Abstract

In systems consisting of multiple clusters of processorswhich employ space sharing for scheduling jobs,such as our Distributed ASCI1 Supercomputer (DAS), co-allocation,i.e., the simultaneous allocation of processors tosingle jobs in multiple clusters, may be required. In orderto handle both single-cluster (local) jobs and multi-cluster(global) jobs, such systems may have only local schedulers(which then need to be aware of the whole system), or onlya single global scheduler, or both, and each scheduler hasits own queue. In this paper we assess with simulationsthe response times of both local and global jobs in multi-clustersystems for different configurations of queues, fordifferent priority orders in which the associated schedulersare allowed to schedule jobs, and for different job-streamcompositions.